iw_cxgb4: RDMA write with immediate support
Adds iw_cxgb4 functionality to support RDMA_WRITE_WITH_IMMEDATE opcode.
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h
index 11d55fc..0fb3e55 100644
--- a/drivers/infiniband/hw/cxgb4/t4.h
+++ b/drivers/infiniband/hw/cxgb4/t4.h
@@ -190,7 +190,19 @@ struct t4_cqe {
__be32 abs_rqe_idx;
} srcqe;
struct {
- __be64 imm_data;
+ __be32 mo;
+ __be32 msn;
+ /*
+ * Use union for immediate data to be consistent with
+ * stack's 32 bit data and iWARP spec's 64 bit data.
+ */
+ union {
+ struct {
+ __be32 imm_data32;
+ u32 reserved;
+ } ib_imm_data;
+ __be64 imm_data64;
+ } iw_imm_data;
} imm_data_rcqe;
u64 drain_cookie;
@@ -253,6 +265,8 @@ struct t4_cqe {
#define CQE_WRID_STAG(x) (be32_to_cpu((x)->u.rcqe.stag))
#define CQE_WRID_MSN(x) (be32_to_cpu((x)->u.rcqe.msn))
#define CQE_ABS_RQE_IDX(x) (be32_to_cpu((x)->u.srcqe.abs_rqe_idx))
+#define CQE_IMM_DATA(x)( \
+ (x)->u.imm_data_rcqe.iw_imm_data.ib_imm_data.imm_data32)
/* used for SQ completion processing */
#define CQE_WRID_SQ_IDX(x) ((x)->u.scqe.cidx)